| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Password Practice Book 1: Intermediate-A | 978-9985-71-115-6 (9985-71-115-7) | 1999 |
| Password Practice Book 1: Intermediate-B | 978-9985-71-118-7 (9985-71-118-1) | 1999 |
| Password Practice Book 1: Intermediate-C | 978-9985-71-120-0 (9985-71-120-3) | 1999 |